[TechAssist] Re: partial fix,RCA P46811LV, PTK195AA bowed, jagged buzzing pix after home power flickered

  • From: "Damon" <damoneb@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 22 Jul 2005 07:37:29 -0500

Did you check the Convergence Power supply to see if it was running? Can you
adjust anything in the Convergence circuit? BTW I think the Convergence
board BOWS only the top and bottom of the picture when the power supply
shuts off.......I think I've had a couple of these units intermittantly turn
itself off, and the price of the board was cheaper than spending hours
identifying the intermittant.

I think I'd check for adjustability and EEprom storage capability
first....pick a grid point, adjust it out of specs a little, store it, then
back out (use only one out of 3 colors, keep a reference color). Go back in
and see if it "remembers", if so, then the EEprom most likely just lost it's
DATA.
.....and you don't have to invest in a new Conv Board. But if it needs one,
you will RUE the day all manufacturers started putting the sensors on the
edges of their screens. Getting "green-OK" is a pain.

Damon B
Telrad Electronics
Fort Wayne IN
----- Original Message ----- 
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, July 21, 2005 3:25 PM
Subject: [TechAssist] partial fix,RCA P46811LV, PTK195AA bowed, jagged
buzzing pix after home power flickered


> Partial fix. The jagged picture looked like arc, so I reseated the HV
> input lead to the HV Splitter block.Then it cleared up.That was it. Now
> the bowed display. Since the bow happened after multiple power
> outtages,think the eeprom got corrupted?
> Phil
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
> personal/ alt. email: pbader@xxxxxxxxxxxxxxx
> see our ad at:
>
http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
>
>
>
> Phil Bader wrote:
>
> >Customer said the house power failed 4 times. After that the set looked
> >this way. I can make out the OSD and tuner video and sound, but the
> >picture js very bowed, distorted with a kind of "christmas tree
> >jaggedness. I was thinking the main power supply was faulty. I unplugged
> >the main AC wires to the converg. power supply board but same. ALSO!:
> >The screen G2 wire let go from inside the fly.Looks like a small peice
> >is still in there. Am I screwed there?
> >Phil
> >
> >
> >
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